In international trade, the following are some detailed factors that affect customers' purchase decisions for public address systems, professional audio equipment, and conference systems:

Product Performance and Quality: The audio performance, volume output, and durability of equipment are crucial factors for customers to consider. For professional audio equipment, clear and distortion-free sound reproduction is essential, while for conference systems, clear and reliable audio and video transmission are crucial.

Brand and Reputation: The reputation of a brand and its products can influence customers' purchasing decisions. A well-established brand may be associated with high-quality products, good customer service, and positive feedback from previous customers.

Price: Price is always a factor in any purchasing decision. Customers will weigh the cost of products against their performance and features to determine if they are worth the investment.

Technical Support and After-Sales Service: For complex equipment like professional audio systems and conference systems, technical support and after-sales service are essential. Customers need to know that they can get prompt solutions to any problems and have access to professional technical support if needed.

Delivery Time and Location: In international trade, delivery time and location can be important considerations. Customers may need products urgently or require them to be shipped to specific locations for installation and setup.

Compliance and Certification: Some countries or regions may have specific regulations or standards for public address systems or conference systems. Products that comply with local standards and regulations may be more likely to be selected by customers.

Customization: Customers may have unique requirements that require equipment to be customized to their specific needs, including features, appearance, or installation requirements. Being able to provide customization can give companies an edge over competitors.

Education and Training: For large or complex audio equipment or conference systems, some customers may need education or training on how to use them effectively. Being able to provide these services can increase a company's trustworthiness in the eyes of customers.

Project Management and Consulting Services: Some customers may require external expertise to manage their projects or provide consulting services. Being able to provide these services can give companies an edge over competitors.

Warranty and Aftercare Services: Customers may factor in the aftercare services such as maintenance and repairs when making purchasing decisions. Having a comprehensive aftercare program can provide peace of mind to customers when it comes to servicing their equipment.

These are some of the detailed factors that affect customers' purchase decisions when it comes to public address systems, professional audio equipment, and conference systems in international trade, especially when choosing OBT's IP public address system as an example.